Carb to TBI

[Bigred1990]

Alright everyone, I’m trying to revive my 1990 k1500 back from a horrible carb swap that was done about 2 summers ago. The truck has had so many reliability issues that I need to do something different. The boat I’m in is to either go back to TBI or LS Swap, I’m looking to have a decent amount of power but also reliable. I see a lot of tbi to carb threads but no carb back to tbi threads lol. I’m assuming I would need a new wiring harness from a junk truck, a new tbi system, a new intake manifold, new fuel pump and maybe a new cam just to be able to go back to tbi….

 

[letitsnow]

Before we can answer questions, maybe you could explain the reliability issues that you have had?

 

[Erik the Awful]

How big is the cam? If it's much more than factory, I'd make the jump to a Sniper or FiTech.

What fuel pump does the truck currently have?

 

[95burban]

What carb are you running? A poor quality carb will cause issues.

 

[Bigred1990]

Before we can answer questions, maybe you could explain the reliability issues that you have had?

Stalling and running rough, sounds real choppy atm.

 

[Bigred1990]

What carb are you running? A poor quality carb will cause issues.

Holley demon I wanna say 650

 

[DeCaff2007]

Just my 2 cents, anything prior to OBDII is NOT worth converting to LS. Too many wiring and computer issues to deal with.

 

[Bigred1990]

How big is the cam? If it's much more than factory, I'd make the jump to a Sniper or FiTech.

What fuel pump does the truck currently have?

I think it’s a factory cam, the truck as an external fuel pump.

 

[95burban]

Holley demon I wanna say 650

I’ve never had good luck with demon, they had quality control issues several years back. I’ve thrown a few away.

If you want efi go with a fitech or similar.

If it was me i would buy a 650 quick fuel or brawler. Make sure you have no vacuum leaks and your timing is set correctly. A good carb will make all the difference, if you’re not familiar with carbs get a how to build Holley carb book. A lot of good info.